Abstract: In one embodiment, a freezer system has one or more shelves, each shelf has shelf electronics and can receive one or more racks, each rack has rack electronics and one or more cells for receiving one or more boxes of samples, each box has one or more RFID tags. Freezer electronics communicate with the outside world and with each set of shelf electronics. Each set of rack electronics communicates wirelessly with the corresponding set of shelf electronics and with the corresponding box RFID tags. Power for the rack electronics is derived from wireless signals from the shelf electronics. The freezer system can detect the presence of racks on shelves and boxes on racks to track the location and the orientation of each received box.

Abstract: In one embodiment, a freezer system has one or more shelves, each shelf has shelf electronics and can receive one or more racks, each rack has rack electronics and one or more cells for receiving one or more boxes of samples, each box has one or more RFID tags. Freezer electronics communicate with the outside world and with each set of shelf electronics. Each set of rack electronics communicates wirelessly with the corresponding set of shelf electronics and with the corresponding box RFID tags. Power for the rack electronics is derived from wireless signals from the shelf electronics. The freezer system can detect the presence of racks on shelves and boxes on racks to track the location and the orientation of each received box.

Abstract: A box mapper has (i) a frame configured to receive a sample box of RFID-tagged sample vials and (ii) a set of antennae configured to read the vial RFID tags of the sample vials to determine the identity and position of each sample vial in the sample box. In one embodiment, the set of antennae include two mutually orthogonal subsets of biphase digit antennae.

Abstract: In one embodiment, a cold storage system for biological samples has one or more freezers, each freezer having one or racks, each rack receiving one or more boxes, each box receiving one or more sample containers. In addition to the biological sample, each sample container has a unique passive RFID tag. Control electronics in each box energize reader coils to query individual RFID tags. Control electronics in each rack communicate with and provide power to the control electronics of each corresponding box, and control electronics in each freezer communicate with and provide power to the control electronics of each corresponding rack, and a host computer communicates with the control electronics in each freezer. In each instance, communication and power provisioning is implemented using magnetic inductive coupling. The system is able to determine the identity of each sample container in the system and maintain that information in a database.

Abstract: In one embodiment, a freezer system has one or more shelves, each shelf has shelf electronics and can receive one or more racks, each rack has rack electronics and one or more cells for receiving one or more boxes of samples, each box has one or more RFID tags. Freezer electronics communicate with the outside world and with each set of shelf electronics. Each set of rack electronics communicates wirelessly with the corresponding set of shelf electronics and with the corresponding box RFID tags. Power for the rack electronics is derived from wireless signals from the shelf electronics. The freezer system can detect the presence of racks on shelves and boxes on racks to track the location and the orientation of each received box.

Abstract: In one embodiment, an antenna configuration for locating RFID tags has two sets of (mutually orthogonal) elongated reader coils, where each elongated reader coil corresponds to two or more different possible locations of RFID tags, and each possible location is associated with one reader coil in each of the two sets. The identities and locations of RFID tags can be determined by (sequentially) energizing the different sets of reader coils and correlating the recorded responses from RFID tags. In one application, the antenna configuration is used at the box level of a cold storage system for biological samples having one or more freezers, each freezer having one or racks, each rack receiving one or more boxes, each box receiving one or more sample containers, where, in addition to the biological sample, each sample container has a unique passive RFID tag.

Abstract: In one embodiment, a cold storage system for biological samples has one or more freezers, each freezer having one or racks, each rack receiving one or more boxes, each box receiving one or more sample containers. In addition to the biological sample, each sample container has a unique passive RFID tag. Control electronics in each box energize reader coils to query individual RFID tags. Control electronics in each rack communicate with and provide power to the control electronics of each corresponding box, and control electronics in each freezer communicate with and provide power to the control electronics of each corresponding rack, and a host computer communicates with the control electronics in each freezer. In each instance, communication and power provisioning is implemented using magnetic inductive coupling. The system is able to determine the identity of each sample container in the system and maintain that information in a database.

Abstract: A box mapper has (i) a frame configured to receive a sample box of RFID-tagged sample vials and (ii) a set of antennae configured to read the vial RFID tags of the sample vials to determine the identity and position of each sample vial in the sample box. In one embodiment, the set of antennae include two mutually orthogonal subsets of biphase digit antennae.

Abstract: In one embodiment, an antenna configuration for locating RFID tags has two sets of (mutually orthogonal) elongated reader coils, where each elongated reader coil corresponds to two or more different possible locations of RFID tags, and each possible location is associated with one reader coil in each of the two sets. The identities and locations of RFID tags can be determined by (sequentially) energizing the different sets of reader coils and correlating the recorded responses from RFID tags. In one application, the antenna configuration is used at the box level of a cold storage system for biological samples having one or more freezers, each freezer having one or racks, each rack receiving one or more boxes, each box receiving one or more sample containers, where, in addition to the biological sample, each sample container has a unique passive RFID tag.

Abstract: In one embodiment, a cold storage system for biological samples has one or more freezers, each freezer having one or racks, each rack receiving one or more boxes, each box receiving one or more sample containers. In addition to the biological sample, each sample container has a unique passive RFID tag. Control electronics in each box energize reader coils to query individual RFID tags. Control electronics in each rack communicate with and provide power to the control electronics of each corresponding box, and control electronics in each freezer communicate with and provide power to the control electronics of each corresponding rack, and a host computer communicates with the control electronics in each freezer. In each instance, communication and power provisioning is implemented using magnetic inductive coupling. The system is able to determine the identity of each sample container in the system and maintain that information in a database.